Grating and method of constructing same



O. JACKSON.

GRATING AND METHOD OF CONSTRUCTING SAME.

APPLICATION FILED FEB. 10, 1920.

1,35 ,151, Patented Oct. 19, 1920.

v I S A :I 5 Z 5 z if PATENT OFFICE.

oLccTr JACKSON, or BROOKLYN, NEW YORK, ASSIGN'OR T0 HEcLA IRON wonms, or

BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

GBATING AND METHOD @F CONSTRUCTlENG SAME.

manner.

To all whom it may concern Be it known that l, OLCOTT JACKSON, a citizenof the United States, and a resident of Brooklyn, in the county of Kingsand State of New York, have invented certain new and useful Improvementsin Gratings and Methods of Constructing the Same, of which the followingis a specification.

My invention relates to steel or other metallic gratings and to themethod of constructing the same and has for its object the production ofa grating of simplicity of construction, of strength and of low cost tomanufacture, the members of.which may be'readily assembled and easilyand accurately joined together.

It has heretofore'been customary to construct gratings by providing themembers thereof with holes at their points of meeting or intersectionand passing rivets through the holes and joining the members by anordinary riveting operation. This necessitates turning the members ontheir sides and holding them in this position with lid thermore thismethod is objectionable for the reason that the riveting operation in agreat many cases has the effect of stretching or drawing the metalmembers particularly if the members are sinuous or other than perfectlystraight and if the membersare of some length the holes or perforationstherein at a point remote from any riveting operation will be drawn outof alinement,

thereby making difficult or impossible at that remote point a rivetingof the members together.

By practising my inventionl have found that the objections hereinbeforenoted have been obviated. that the members may be fastened together toproduce the finished or completed grating more easily and expeditiouslythan by riveting them together and that'the finished grating'possessesas much strength and rigidity as if its members had been joined byriveting. Furthermore my invention permits member or members to beremoved from the completed structure Specification of Letters Patent.

Patented Oct.19, ieeo.

Application filed. February 10, 1920. Serial No. 357,586.

is a plan view of my improved Fig. 3 is a front elevation of one of thesinuous members of the grating.

Fig. 4 is a perspective view of the clip for joining the memberstogether.

Referring in detail to the several figures of the drawing: 7

1 indicates the straight longitudinai memembers intermediate thelongitudinal members of a grating which are joined or connected at theircrests 3 to the straightlongitudinal members to produce the finished orcomplete grating. If the old riveting operation were employed forjoining the members together they would be provided with holes at. theirpoints of meeting or intersection, for instance at the point A, wherethe crests of the sinuousmembers meet or engage the longitudinalmembers, then turning the members over with their sides parallel .to theground, passing rivets through the holes and rivetingthe memberstogether three at a time at successive points. These operations wouldlbecontinued by a building up process, that is by the addition to andriveting to the structure of additional members until it has reached orattained the desired size. When, however, the memhere were rivetedtogether at the oint A, it would be found that the sinuous members whichare riveted to the longitudinal memiber at that point would be drawn orv7O tallic members and 2 the sinuous metallic stretched so that when thepoint B, for instance, were reached for the rivetin operation, the holeswith which the mem ers are provided for riveting at that point would beapt to be drawn out of alinernent thereby precluding the rivetingoperation or making it impracticable at the point B. According to myinvention I provide themembers at their meeting or intersecting pointswith holes 4:, preferably rectangular-shaped, and of a size permittingthem to snugly receive fiat rectangular-shaped lockin clips 5.

All the parts of the grating, at is; the

sinuous members 2 and the longitudinal members 1 thatform the completestructure of the required size are then assembled on their edges on atableuor other support in substantially the same position the oocupy asin the finished product an the locking clips 5 are slipped through theholes 4 of the sinuous members and the longitudinal members with theends 5rthereof which form flanges projecting outwardly as shown at theright of Fig. 2, which ,clips prevent drawing or stretching of themembers at any point. Said ends or flan es 5 are then forcibly bentdownwardly into locking engagement with the sides of the crests 3 of thesinuous members 2 by means of a forked tool 6 having arms 7 for engagingsaid ends or flanges 5'. This eflects a locking of the members of thegrating together as is obvious and the locking or' joining operation maybe easily and expeditiously accomplished. Also if it is desired'toreplace any of the members of the grating, this may be accomplished byunlocking the clip joining that,

memberv to the other members by turning the flanges thereof upwardly,removing the clip and joining the new member to the other members in themanner previously described.

What I claim as my invention is 1. A metallic grating comprisinglongitudinal members and sinuous members intermediate said longitudinalmembers with the crests of the sinuous members engaging the longitudinalmembers, said longitudinal and sinuous members being provided with holesin alinement at their points of meeting and locking clipspassing throughsaid holes and provided with flanges bent over against the flat sides ofthe sinuous members to hold the longitudinal and sinuous members inlocking engagement.

ends of the locking clips over into engagement with the sides of themembers to lock them against relative movement. 7

3. The herein described method of constructing a metallic gratingcomprising longitudinal members and sinuous members consisting inproviding the sinuous members with holes at their crests and thelongitudinal members with holes adapted to register with the holes inthe sinuous members, assembling the parts on their edges with thesinuous members intermediate the longitudinal members and engaging thesame and with the holes in the members in register, passing clipsthrough said holes and bending over the ends of said clips into lockingengagement with the sides of the sinuous members.

4. The herein described method of constructing a metallic gratingconsisting in providing the members thereof which form the completestructure of the required size with holes, assembling the members ontheir edges with the holes in register, passing locking clips throughsaid holes and bending the ends of the locking clips over into engaement with the sides. of the members.

igned at Brooklyn, in the county of Kings and State of New York this 4"day of February, A. D. 1920.

OLCOTT JACKSON. Witnesses:

WM. A. OCoNNoR, DANIEL A; Woons.

